Home / 20,912,150.35-31,380,502.81-8,780,680.92

Finding the Fourth Proportional to 20,912,150.35, 31,380,502.81 and 8,780,680.92

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Solution

The fourth proportional to 20,912,150.35, 31,380,502.81 and 8,780,680.92 is: 13,176,176.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,150.35 : 31,380,502.81 = 8,780,680.92 : x
  2. Step 2: Convert to fraction form
    20,912,150.35/31,380,502.81 = 8,780,680.92/x
  3. Step 3: Cross multiply
    20,912,150.35x = 31,380,502.81 × 8,780,680.92
  4. Step 4: Simplify right side
    20,912,150.35x = 275,542,182,283,773.38
  5. Step 5: Solve for x
    x = 275,542,182,283,773.38/20,912,150.35
  6. Step 6: Final answer
    x = 13,176,176.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.